Improvement in cultivators



No. 80,556. PATBNTED AUG. 4, 136s.

R. MOGORKELL.

GULTIVATOR.

mum

.UNITED VSTATES' PATENT OFFICE.

ROBERT' Macon-Kann, or PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT INCuLrlvAi-os.

Speciflca'ton'fornlng part of Lott-crsPatent No. 80,556. llatu'AlgH-t 4l 1568? ilmedwll I July. 15, 1ste.

To a/ZZ whom; it 'may' concern Beit known that I, ROBERT McCoRKnLL,

j of Philadelphia, in the county of Philadelphia Mld State o f Pennsylvania, have invented cerjtaiii new and useful Improvements in Cultivatore;l and I declare the following-is a full, clear, and exact description thereof, reference being Vhad to the accompanying drawings, making a jpa'rt of -these speciiications, and to the letters -of reference marked thereon.

Figure 1 is a perspective view. Figs. 2 5 3,

4, 5, 6, 7, and 8 are views of portions detached.

The nature of my invention 'consists in a novel devicefor giving the plows or shovels a ,lateralmotion; in a novel device forecuring fthe"A plow-standards .to 4the ydrag-bars, and' a novel method of adjusting the angle ofthe plow.- To enable others skilled in the art `to conf struct and use my improved cultivator, I will proceed to describe it.

' I construct a frame consisting of a cross-bar, A, and tongue B. The frontbar, A, is slotted longitudinally, so as to admit of a lateral adjustment'of the drag .bars or beams C. The

'dragbars C are formed by two separate bars,

divided -at the` fropt and united at the rear end, as-shown in Fig. 1. lThe drag-bars C are pivoted to a single piece, E,'of which Fig. 2 is a rear plan view. This plate E is pivoted to a corresponding plate, F, of "which Fig. 31's a rear plan view, which is secured to the front bar, A, by the bolts a a', passing throughv the slot, as seen in Fig. 1. The plate E is secured to F by a bolt or journal passing through the center of both plates and extending through the slot in .the cross-bar and held by a nut, e.'

It will'thusl be seen that the plate E is free to turn in a vertical plane, and that consequently the drag-bars will turn with it,- thus throwing the plows G, attached to said drag-bars C, either to the right or left, as may be desired. v

For the purpose of operating the plows G, the leverV H is pi-voted on the top of the tongue B,

and atits front endl this lever is attached to a p metallic-plate, K, having plain gear' on a sec-4 .tion of its periphery abovethe tongue, Directly 'in front of K is a rack, L, Fig.. 1,y with corresponding gear engagingwith that on plate K, fastened to a bar, N, which connects the plates E by a bolt or pin passing in the upright projection on the plates, as seen in Figs. i and 1.

It will thu`s-be seen that by moving the lever H the platesE are carried with it, by means of theconnecting-bar N and rack L, thereby I moving the plows, both in the same direction, 4to the right Vor left, according as the lever is moved in one or the other direction.. By vthese means the plows are made to accommodate themselves to the 'sinuositiesof the row of plants between them at the will of the opl erator'.

The rear end of the drag-bar C is provided vwith a circular plate or enlargement, b, which has a series of V- shaped notches at its upper and lower edges on both sides or faces. The;

plow-standards n, at their upper ends, are pro- L'vided with corresponding notches, asseen in Fig. 6. The standards Jia are fastened'to 'the drag-bar C by a bolt passing transversely through them, secured by a nut in the usual manner; but between the nut and the ,drag-bar.,

or standard is interposed a lever, c, and a ber disk or'ring, as shown in Fig'. 1. y It wlll be observed that Vthe notches are so formed that their front faces form an inclined surface,

so that when the plow strikes a rock, root, or

other obstruction the upper end of the standard (n will ride forward, the inclined surface of the notches thereon slidingup the corresponding faces of Vthe notches on the head b, the rubber spring or disk ryielding'sufciently to allow this to be done, and thus permit the standard n to turn on the bolt and prevent the plow from breaking or injury. The lever c is provided ywith a ',circular plate, c', through which the'belt passes, on the inside of which there areotwo', sections of a curved incline plane, as seen in Fig. 7, itting to corresponding sections of a similar formon the standard n, or the vend, of the drag-bar b, so that when the lever is drawn back it will draw on the' bolt and compress the rubber spring, so as to circle, and having both lthe dragbar C. andhead b serrated, so that the notches correspond,

I make'a -joint in the and can be held steadily in place'by a bolt,A s, v

passing through them, Fig. 1,v and by having i a slot in one or both parts of the drag-bar thus formed in which the bolt can slide, as seen in Figs. l and 5.l It will beseen that the head b can be moved back or forward on the circle, thereby altering the angle of the plowshare,

so as to cnt a wide or lnarrow furrow, and' throw the furrow a greater or. less distance from lthe heel of the plow as the angle is more acute or obtuse; or vI construct a standard, x, with ribs or serrations running longitudinally on one side, which is made rounding, and cut a slot longitudinally in it, and cut a recess in the beam y, Fig. 8, to correspond to the size and shape of the standard, and having ribs or serrations to engage with those on the standard, and also a slot running transversely to that in the standard, as seen in Fig. 8, and

lowering-the 'standardE on the beam or drag; bar it will alter the depth of the furrow.

By attaching these improvements to the cull vater already patented to me, No'. 50,257,

construct a cultivator that, is capable of all required adjustments," and that can be readily and easily. manipulated..

What I claim, and desire to secure by Letters Patent, is-

L The lever H, rack L, and connecting-rod N,- in combination with the lplates E, for the purpose set forth.

2. The lever c, in combination with the dragbars C, standard n, and rubber spring r.

3. The mode of attaching and securing the head b ofthe drag-bar C, for they purpose of adjusting theangle o`f the ploWs.`

4. The mode of attaching and securing the standard m to the beam y, as and for the purpose set forth.

ROBERT MCCORKELL.

Witnesses: i

WML .L DELL'EKER,

ALONZO P. RUTHERFORD. 

